Within the past few weeks I have received from the Rev. J. H. Keen a number of fresh specimens of larvæ and pupæ of Ægialites Californicus, Mots., or as it has been called for years, Æ. debilis, Mann. These had been taken by Mr. Keen somewhere in the vicinity of his home at Metlakatla, B.C., and were especially welcome to me sice they gave an opportunity for the study of the early stages of a beetle whose position has always been considered problematical.

The number of types given for this species as 3,500 is erroneous. The correct number is 3,430, as the Kaslo specimens number 3,425, not 3,495 as incorrectly written. A species as common as this has naturally been often taken before, and I may state that it is generally known as T. furfurata, Grt., but incorrectly so.

Preparatory to a revision of the Nearctic Hemerobiidæ I present descriptions of a few new species of Hemerobius. A few of the names have been used already elsewhere, but without description. Outline figures of the male genitalia will be given in the forthcoming revision.

Hemerobius transversus, n. sp.—Face shining black, vertex and antennæ pale yellowish; thorax pale, a black stripe across front part of the mesothorax; abdomen brownish; legs pale yellowish. Wings with the margins faintly but broadly clouded with brown; the gradate series marked with dark brown, and a brown band between the first and second first.

Sirex taxodii, new species.— ♀. Length, 11.5 to 13 mm.; ovipositor very nearly the length of the abdomen. Black; a spot back of eyes and the process of the las dorsal segment reddish-yellow; antennal joints from 11 to apex, an annulus at base of middle and hind tarsi, and at base of hind tibiæ, yellowish-white. Wings brown-black, with a faint purplish tinge in certain lights.

In the issue of Psyche for April,1903, I published a paper on the diffusion of insects in North America, in which reference was made in a footnote to the probable trend of diffusion in the Sphingidæ, and this may be looked upon as supplementary to that publication. In the former paper I could not deal with this phase of the problem of diffusion of insects, to the extent that this family deserves, nor am I certain that this is possible even now, but it seems desirable to point out some suggestive features of the present distribution and probabale diffusion of this interesting family of moths.

In connection with the work on the Philippine mosquitoes carried on by the authority of the Surgeon-General, U.S. Army, and “for and with the co-operation of the Medical Corps, U.S.A.,” a lot of mosquitoes recently received from Cottabato, Mindanao, P.I., makes it possible to describe a new Myzomyia; to state definitely all the differences between Stegomyia scutellaris, Walker, and the variety Sumarensis, Ludlow; and to make a small correction in the description of Myzorhyncus pseudobarbirostris, Ludlow.

The eggs of this rare species were kindly sent me from Tacubaja, Mexico by Mr. O. W. Barrett. The food-plant of the caterpillar was unknown to him. Heretofore we have only had the figures of the mature larva of three species of this genus, and four sketches of the caterpillar of A. armida, the better known species of this interesting genus, which ranges from Mexico to Brazil. The larva figured by Madam Merian, Stoll, Burmeister, and by Peters, is represented as being smooth, without any tubercles, horns, or hairs.

Colletes niger, n. sp. — ♀. Black, shining, with long erect jet black pubescence; clypeus prominent, with coarse close punctures tending to form striæ on either side of a shallow median longitudianl depression, and with a deep transverse depression just before the sharply truncate apex; face above and on sides of clypeus much more closely and finely punctured, and covered with a long and dense pubescence which extends over the clypeus itself; vertex and cheeks very finely punctured, the former practically bare except for a tuft of long hairs in the interocellular space, the latter with abundant long hairs; ocelli pale, opalescent; occiput fringed with long erect pubescence; malar space smooth, its length about, two-thirds width of mandible at base; mandibles slender and polished, deeply grooved without, notched almost at the tip, which is blunt and slightly rufescent in some lights; labrum with a rounded median pit at base; antennæ entirely glossy black, the first joint of the flagellum as long as the second and third together; no prothoracic spines; disc of mesothorax sparsely covered with erect hairs and with a few fine punctures, the pubescence becoming longer and denser and the punctuation finer and much closer on the sides, especially anteriorly;

In the October number of the St. Paul Medical Journal, Dr. Burnside Foster, the editor, gives a very interesting case of larvæ found in the cutaneous tissues of a three weeks old infant, that a specialist in Dipterology identified as the above species. The case was not one of Dr. Foster's patients, but was from Superior, Wis. If the identification is correct, and I see no reason why it should not be, for the specialist was the same one who identified the first larva found in the boy at Chester, Illinois, as a Gastrophilus, and he had one of the types before him for comparison, the case is important. How they came to be in the child's skin is an interesting question, and in a brief note in reply to Dr. Foster's article, I suggested an examination of the excreta of the mother.